Issued Patents All Time
Showing 26–50 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7483614 | Optical fiber and optical device using the same | Masaaki Hirano, Tetsuya Nakanishi | 2009-01-27 |
| 7379677 | Method of wavelength conversion and wavelength converter | — | 2008-05-27 |
| 7340135 | Light source apparatus | — | 2008-03-04 |
| 7324756 | Optical demultiplexer and optical transmission system | Masato Tanaka, Fumiyoshi Ohkubo | 2008-01-29 |
| 7292748 | Dispersion-compensating system | Masao Tsukitani, Eisuke Sasaoka | 2007-11-06 |
| 7280759 | Optical transmission system, optical multiplexer, and optical demultiplexer | — | 2007-10-09 |
| 7233727 | Optical fiber and optical device using the same | Masaaki Hirano, Tetsuya Nakanishi | 2007-06-19 |
| 7202994 | Wavelength converter | Masaaki Hirano, Takatoshi Kato | 2007-04-10 |
| 7162129 | Optical transmission line and optical transmission system | — | 2007-01-09 |
| 7103285 | Optical transmission system for reducing nonlinear optical phenomena using modulation depth control system | — | 2006-09-05 |
| 7085040 | Optical transmission line, method of making optical transmission line, and optical transmission system | Masayuki Nishimura | 2006-08-01 |
| 7085041 | Raman amplifier and optical transmission system | — | 2006-08-01 |
| 7079769 | Dispersion-compensating system | Masa Tsukitani, Eisuke Sasaoka | 2006-07-18 |
| 6982823 | Wavelength converter | — | 2006-01-03 |
| 6963695 | Optical communication system and method of assigning signal channels | — | 2005-11-08 |
| 6907172 | Optical transmission line and optical communication system | Masayuki Nishimura | 2005-06-14 |
| 6907200 | Dispersion compensating module, line switching apparatus and optical communication system | — | 2005-06-14 |
| 6892003 | Variable dispersion compensator and optical transmission system | Makoto Katayama, Masayuki Nishimura, Tomomi Sano, Masakazu Shigehara, Hiroshi Suganuma +2 more | 2005-05-10 |
| 6888669 | Raman amplifier | Masashi Onishi | 2005-05-03 |
| 6868203 | Optical transmission system | — | 2005-03-15 |
| 6853766 | Dispersion-compensating module | Masao Tsukitani, Eisuke Sasaoka, Shigeru Tanaka | 2005-02-08 |
| 6795235 | Optical transmission line, method of making optical transmission line, and optical transmission system | Masayuki Nishimura | 2004-09-21 |
| 6763194 | Optical transmission system and channel assigning method | Masayuki Nishimura | 2004-07-13 |
| 6724525 | Raman amplifying control unit and optical transmission system | Eisuke Sasaoka, Masayuki Nishimura, Shigeru Tanaka | 2004-04-20 |
| 6687433 | WDM optical communication system | Motoki Kakui | 2004-02-03 |